Reenforced-concrete wall construction



G. L. RACKLE. REENFOHCED CONCRETE WALL CONSTRUCTION. APPLICATION FILEDDEC-3|. 1920.

1 ,404,647 Patented Jan. 24, 1922.

2 SHEETS-SHEET l- WITNESSES INVENTOR 6506?: L. BCKAE Q A TTQBNEYS G. L.RACKLE.

REENFORCED CONCRETE WALL CONSTRUCTION.

APPLICATION FILED DEC- 31. 1920.

1,404,647, Patented Jan. 24, 1922.

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MID-CONCRETE WALL COMUG'IIOI.

Specification of Immi rant. Patented Jan. 24, 1922- Applioatlon fledDecember 81. 1880. Serial Io. 484.885.

To all whom it may concern:

Be it known that I, GEORGE L. RACKLE, a citizen of the United States,and a resident of Cleveland, in the county of Cuyahoga and State ofOhio,

mum amount of material to make a strong wall with a maximum amount ofair space.

The invention is illustrated in the drawings, in which- I Figure 1 is anelevation of the wall;

Figure 2 is a plan view of a portion of the wall;

Figure 3 is a perspective view of part of Figure 4 is a verticaltransverse section taken through the studding section; and

Figure 5 is a detail of a bonding clamp for positioning the inner andouter slabs of the wall.

The invention as illustrated in the drawings comprises a wallconstruction made up of a plurality of layers of slabs of concrete,which 'are preferably reenforced. These slabs are arranged in the formof inner and outer walls with an air space between them. These fiatslabs, such as are designated by the numeral 1, can be entirely precastbefore being assembled in the wall construction. Each slab is formedwith a longitudinally extending groove 2 in its lower and upper edges.These grooves .are provided to engage' and co-operate with projectionson the bonding clamp, to be hereinafter described. Intermediate thelength of each slab and disposed on the inner face thereof is a groove 3into which one edge of the studding 4 is adapted to lie when the slabsare assembled. Each end of each slab is likewise provided with a groove5 which in combination with a similar groove in the adjacent 'end ofanother slab forms a complete groove similar to the groove 3 abovementioned.

The studding 4 is constructed of a plurality of short sectionssubstantially equal in length to the depth of two of the slabs 1. Thesesections of studding, such as 4, are made of reenforced concrete and areprovided. with dowel holes, such as are reprehave invented anew andImproved Reenforced-Concrete Wall Construc firm and integral wall sentedin Figures 6 and 4, into which dowel 7, preferably made of twistedsteel, may

grouted. These sections of studding are' arranged one above the othertoform a continuous studding member,jthe dowel ins 7 projecting from theend of one section of studding into the dowel holes 6 of the adjacentsection. The studding co-operating with the grooves in the wall slabs 1defi- 'nitel y space these slabs the required distance apart. Thegrooves in the slabs are arranged as above described for the reason thatthe slabs are generally arranged in the wall with short joints staggeredwith respect to the slabs in the adjacent levers. However,

this particular arrangement of grooves need not be essentially identicalin all cases. Va-

riations thereof are permissible, depending upon the particular type ofwall bemg constructed.

A bonding clamp 8, made of sheet metal of any suitable size andstrength, is provided to co-operate with and lie between adjacent endsof the studding sections 4 so as to hold each of the slabs 1 in thedefinite spaced position determined by the studding sections 4. Thesebonding clamps are provided with apertures, such as '9, through whichthe dowel pins 7 extend. Each bonding clamp is ada ted, as shownparticularly in Figures 3 an 4, to be disposed between the ends ofadjacent studding sections 4, and each end is provided with upwardly anddownwardly projecting ears 10 and 11, as shown particularly in Figure 5.These ears are struck up out of the metal of the clamp itself, making itan article which can be very simply and economically manufactured.

As shown in Figure 4, one of the ears 10 and 11 extends upwardly fromthe end of.

the clamp 8 into one of the grooves 2 in the slab 1 with which itco-operates, whereas the other cars project downwardly into a similargroove in the slab l positioned below. Therefore, it is seen that theone clamp made of a single piece of metal is provided with means wherebyfour slabs are definitely and relatively positioned with respect to eachother and the studding.

The slots 2 in the upper and lower edges of each slab are provided notonly to receive the ear portions 10 and 11 of the bonding clamps 8 butalso are ada ted to receive mortar, which may be place in the jointsbetween adjacent slabs, thus making a very construction. The

outer faces of each slab may be provided with any iacing material of anysuitable dea l will be readily observed that this wall ismade up ofelements which are substantially entirely precast and are very easilyand quickly assembled into a strong wall construction. The space betweenthe slabs on one face of the wall and the slabs on the other provides amaximum air space.

What I claim is:

1. A wall construction having inner and outer s aced walls formed of aplurality of cementltious slabs, which comprises a studding section ofcementitious material disposed between the w'all sections to space thesame, connections between said section of studding and an adjacentsection, and a bonding clamp engaged with and positioned by each sectionand connection, the ends of the clamp engaging with the walls to holdthe walls in their proper spaced relation.

2. A bonding element for wall structures with the inner and outer wallslab.

3. A bondingdevice for wall structures having inner and outer wallsections, formed of a plurality of cementitious slabs, which comprises apair of superposed studding sections disposed between the wall sectionsto space the same, dowel connections between and connecting saidstudding sections, a metallic bonding plate disposed between saidsections and engaged by said dowel connections, and turned over earportions on each end of the'clamp adapted to engage the edges ofadjacent wall slabs on the inner and outer wall surfaces.

4. A bonding device for wall structures having inner and outer Wallsurfaces formed of a plurality of slabs, each slab having a groove inits upper and lower edges, WlllCll com rises a pair of superposedstudding sections disposed between the inner an outer walls, eachsection hav ng recesses therein, dowel connections posltloned 1n saidrelative position.

recesses by cementitious material and extending between adjacentsections to bind them together, a bonding plate engaged by.

said dowel connections and dlsposed between the ends of adjacentstudding sections, and turned-over ear portions on each end of thebonding plate, said ear portions adapted to engage with grooves inadjacent slabs on the inner and outer wall surfaces. 5. A wall structurehaving inner and [outer wall sections formed of slabs, which adapted toengage the slabs on the inner and outer walls to hold the same in theproper 6. A wall structure having inner and outer walls, which comprisesa studding section' disposed therebetween to space the same, saidstudding section having recesses in each end, and a plurality of dowelpins disposed in said recesses and held therein by cementitiousmaterial, said pins being formed of twisted metal,

7. A wall structure having continuous inner and outer walls spaced fromeach other throughout their extent and formed of a plurality of slabs ofcementitious material, said slabs being rabbeted vertically at intervalsthroughout their length, which comprises a pair of superposed studdingsections of cementitious material adapted to engage the rabbeted groovesto space the inner and outer wall sections, a plurality of recesses inthe ends of each section, dowel pins disposed in said recesses and heldtherein by cementitious material, said dowel pins extending from onesection to another to form a contlnuous stud, a clamping plate havingapertures therein disposed between adjacent ends of the studdingsection, the dowel pins extending through the apertures in the plate,and turned-over ear portions on the ends of the plate adapted to engagethe edges of adjacent slabs of the wall sections to hold them in theirproper relative posi- 'tion.

GEORGE LOUIS RACKLE.

